US 12,395,206 B2
Parasitic tolerant charge-based coupling measurement
Aaron James Bluestone, Camarillo, CA (US)
Assigned to THE BOEING COMPANY, Arlington, VA (US)
Filed by The Boeing Company, Arlington, VA (US)
Filed on Oct. 9, 2023, as Appl. No. 18/483,344.
Prior Publication US 2025/0119178 A1, Apr. 10, 2025
Int. Cl. H04B 3/487 (2015.01)
CPC H04B 3/487 (2015.01) 20 Claims
OG exemplary drawing
 
1. A system for measuring parasitic capacitance coupling between a first communication transmission line and a second communication transmission line that are adjacent, the system comprising:
a parasitic tolerant capacitive based coupling measurement circuit (CBCM), the CBCM comprising:
a capacitive auto-zeroing buffer configured to bias the second communication transmission line and displace coupling charge transferred from the first communication transmission line to a switched capacitor storage element;
a capacitive trans-impedance amplifier configured to integrate displaced coupling charge onto an output voltage node of the second communication transmission line; and
a comparator configured to switch states of the capacitive trans-impedance amplifier once the capacitive trans-impedance amplifier integration has surpassed a reference trippoint.